Lawrence Siff
CEO, Neptune Advisors® and C Level Community®.
Lawrence Siff is the CEO of Neptune Advisors and C Level Community. Neptune Advisors is an advisory firm of former operators that applies a holistic approach to elevating middle market companies for optimal growth and success. C Level Community, a membership-based platform, connects middle-market leaders by providing educational resources both online and in person through its Thought Leadership Series, featuring world renowned CEOs. Neptune Advisors is proud to have been inducted into the Corporate LiveWire Hall of Fame after being named the Innovation & Excellence Award winner for the United States in 2024, 2025, and 2026, one of the most highly anticipated and celebrated recognitions within the global corporate community. Mr. Siff has advised hundreds of CEOs and Boards on maximizing corporate value. He is the Founder of the Annual Pathway to Platinum Conference designed for CEOs to share best practices in management and oversight.
Mr. Siff, a National Association of Corporate Directors (NACD) Board Leadership Fellow, serves on the Board of Directors of MyJOVE Corporation, Two Ten International Footwear Foundation (Chair, Investment Committee), Museum of Science (Past Chair, Investment Committee) and Brimmer & May School (past Chair). Mr. Siff previously served as a board member for Mason Companies Inc., Jones & Vining, Imagination Brands (Chair), Airmid Critical Care Products, Resilient Systems (sold to IBM), Kayem Foods, POW Audio, Formerly, Mr. Siff served on the boards of Asia-America Chamber of Commerce (Chair), Boston Aid to the Blind (Chair), Brown Club of Boston (Chair), Winsor School, New England Business Association, Association for Corporate Growth and the MA Senate Business Advisory Council. He is an Industry Advisor for Silverwood Partners, a boutique investment bank.
Prior to Neptune Advisors, Mr. Siff was Principal and Managing Director of Gordon Brothers Group, a $50 billion investment and transaction advisory firm. At Gordon Brothers Group, Mr. Siff founded the consumer products and branding businesses, which grew to become two of the firm’s largest divisions. As its Director of Strategic Acquisitions, he led acquisitions ranging from $5 million to $1.2 billion. Mr. Siff served on the Executive Committee and was an advisor to GBMP, an equity and debt fund. Over his 40-year career as a growth‐oriented corporate executive, Mr. Siff led manufacturing, technology, consumer, wholesale and retail businesses. He was the President and CEO of Babystripes, Inc., an online retailer of luxury baby gifts, and the President and CEO of Cherry Tree Products, Inc., a manufacturer, wholesaler and retailer of high‐end children’s clothing. Mr. Siff was the President and CEO of Ambassador Shoe, B‐W Footwear Inc. and B/W/A International, where he established operations at 38 factories in 9 countries and successfully sold the companies to strategic acquirers. Mr. Siff began his career at Procter and Gamble where he created the $4 Billion Wholesale Club Division.
Mr. Siff is a recognized expert in corporate governance. He has been a speaker at the National Directors Institute (Chicago), The Society of Corporate Secretaries and Governance Professionals (NYC), the Chief Executives Officer’s Club (Boston), the Asia America Chamber of Commerce (Boston), Morgan Stanley Smith Barney (NYC), Armanino McKenna Technology Forum (San Francisco), as well as a lecturer at Brandeis University International Business School, Babson Olin Graduate School of Business and Harvard Business School. He has been a contributor to Forbes. Mr. Siff graduated magna cum laude from Brown University and the Executive Program at Dartmouth’s Amos Tuck Business School.
Featured Speakers
Christopher Kalmbach
Director, Business Transformation and AI Lab
Chris has over 14 years of experience, most recently in finance leadership/ELT roles at PE/VC backed SAAS businesses and has helped to stand up CrossCountry’s AI Innovation Lab which has been helping companies successfully transforming business with the adoption of AI. Chris has experience in running all aspects of the finance organizations, including procurement and sales operations as well as experience managing legal, IT, and human resources. Chris drove transformation change at all organizations and has led IPO readiness, large scale acquisitions & divestures, various systems implementations, reorganizations, debt/equity fundraising, accounting adoption/implementation, stand up of data lake/visualization tools, and various strategic initiatives (pricing/packaging, tax/hedging strategy, cost reallocation/take-out, etc.).
Mark Altman
Founder and Speaker
A dynamic executive and accomplished change catalyst with over two decades of experience, Mark has been recognized as an Inc. 500 entrepreneur. He has had the privilege to coach and mentor Fortune 500 executives and work with some of the world’s most recognizable brands to develop the next generation of business and sales leaders. Mark is seen as a visionary who uses his presentation and communication skills to paint pictures, tell stories, frame experiences, and shape perspectives.
In 2014, Mark launched MindsetGo, an innovative company that specializes in omnidirectional communication, emotional agility, and shifting mindsets. Mark’s goal when working with clients is to facilitate sustainable performance, attitude, and habit change with self-awareness as the foundational core competency. Mark supports all levels of leadership in a wide variety of areas such as wealth management, insurance, manufacturing, construction, lumber, healthcare, information technology, and hospitality. He has been credited with superior relationship development insight and an innate ability to connect with the people he supports. This allows him to identify and resolve complex communication and change management issues throughout organizations.
Prior to MindsetGo, Mark founded Mark Altman & Associates (MA&A) in 2001. He grew and transformed his vision into a business which was recognized by Inc. Magazine as one of the fastest growing privately held companies in the nation in 2010 and 2011. Mark sold the company and, shortly thereafter, became a private investor and member of Launchpad Investment Group in Boston.
Mark is a native of Boston and enjoys spending time with his three active children. He has also been a passionate youth sports coach for the last 20 years, and a freelance sports reporter for the Associated Press (AP), covering home games for the Boston Red Sox, Celtics, and Bruins. Mark hosts the ICommunicate podcast, which features trusted experts who discuss diverse communication challenges and solutions in professional, personal, and generational relationships. The podcast supports emotionally intelligent communication that bridges relationship gaps in the workplace between employers, employees, and leaders. He also chairs and facilitates Meeting of the Masterminds, supporting business owners seeking problem-solving, accountability, new perspectives, and strategy.